Abstract: Wall covering systems and wall covering system components are disclosed. The wall covering systems can comprise a first panel interlocking with a second panel and wherein the first panel comprises features that are configured to mate with features of the second panel. The wall covering system component comprises a panel comprising features to be aligned with and mate with features on adjacent panels.

Abstract: A cooler with a chamber and a cavity in its lid, into which cavity a block of dry ice is inserted. Heat transfers from the chamber through a heat transfer element connecting the chamber to the cavity. The rate of this heat transfer is regulated by covering or uncovering the heat transfer element on the chamber side.

Abstract: A new METHOD AND APPARATUS FOR AUTOMATICALLY PRODUCING A SMALL BLOCK OF SOLID CARBON DIOXIDE is disclosed and described. The new method and apparatus is comprised of an electrical solenoid operated liquid fill valve, a dry ice block forming chamber having porous walls and/or lining attached to or forming its walls, a hydraulic cylinder and ram, a hydraulic pump assembly, a dry ice block forming chamber door, an electronic solenoid operated pneumatic valve, a pneumatic cylinder and ram, and a digital electronic microcontroller. A pressurized cryogenic Dewar-type tank containing liquefied carbon dioxide provides the cold carbon dioxide input fluid to this invention.In operation, liquid carbon dioxide is forced out of the pressurized Dewar-type tank to form carbon dioxide snow, with said snow being deposited into a dry ice block forming chamber having porous walls and/or lining attached to or forming its walls.

Abstract: A device for restricting flow of fluids and reducing noise that minimizes filling losses and muffles the vent noise, for example, while gravity filling cryogenic cylinders from a storage tank. The filling loss reducer part of this device is comprised of valve body, rotor, valve seat, o-ring, springs, and ball bearings. The noise muffler is comprised of a cylinder with tubes inside it. The loss reducer and muffler are assembled together to form the device. In operation, when filling cryogenic cylinders, for example, the device is screwed on to the vent valve of the cryogenic cylinder being filled. During the fill process, vent gases from the cryogenic cylinder pass through an orifice in the device. The size of the orifice can be changed to any one of the multiple discrete sizes by manually turning the rotor. This manipulation of the orifice size changes the pressure difference between the storage tank and the cryogenic cylinder.